Across
1
Tissue that contracts for movement
4
Nerve cell in the brain
5
Unit of energy
6
Amplified beam of light
10
Particle of light
11
Form of thermal energy
Down
2
Ball of burning gas in space
3
Fourth state of matter
4
Center of an atom or cell
7
Absolute temperature scale unit
8
Unit of force
9
Precious yellow metallic element